سلام وقت بخیر پس از اینکه درخاست ثبت فرصت ارسال میشود خطای زیر پیش خواهد آمد همچنین در wcf client هم چک شد عینا با همچین موردی مواجه خواهیم شد غیر از درسترسی crmobjecttypeCode که از شخصی سازی و نمای کلی تنظیم میکنیم آیا تنظیم دیگری نیز باید صورت گیرد ؟

"System.InvalidOperationException: \nNullable object must have a value. ---> System" +
".Exception: \nNullable object must have a value. ---> System.InvalidOperationExce" +
"ption: Nullable object must have a value.\r\n at System.ThrowHelper.ThrowInvalid" +
"OperationException(ExceptionResource resource)\r\n at System.Nullable`1.get_Valu" +
"e()\r\n at Septa.PayamGostar.BusinessLogicLayer.Components.CRM.OpportunityBiz.Sa" +
"veEntityFull(OpportunityEntity opp)\r\n at Septa.PayamGostar.BusinessFacadeLayer" +
".CRM.User.CrmObjects.CrmObjectSaver.SaveInternal[T](T crmObject, CrmObjectSaveMo" +
"de mode, Gp_UserActivityType userActivityType, Boolean trackChangesInSaver)\r\n " +
"at Septa.PayamGostar.BusinessFacadeLayer.CRM.User.CrmObjects.CrmObjectSaver.Inse" +
"rtCrmObject[T](T crmObject, CrmObjectSaveMode mode, Boolean trackChangesInSaver)" +
"\r\n at Septa.PayamGostar.BusinessFacadeLayer.CRM.User.CrmObjects.CrmObjectSaver" +
".Save[T](T crmObject, CrmObjectSaveMode mode, Boolean trackChangesInSaver)\r\n -" +
"-- End of inner exception stack trace ---\r\n at Septa.PayamGostar.BusinessFacad" +
"eLayer.CRM.User.CrmObjects.CrmObjectSaver.Save[T](T crmObject, CrmObjectSaveMode" +
" mode, Boolean trackChangesInSaver)\r\n at Septa.PayamGostar.BusinessFacadeLayer" +
".CRM.User.ManageCrmObjectsFacade.Save[T](T crmObject, CrmObjectSaveMode mode, Bo" +
"olean trackChangesInSaver)\r\n at Septa.PayamGostar.BusinessFacadeLayer.CRM.User" +
".Process.Engine.EngineBase.Save(CrmObjectEntity crmObject, CrmObjectSaveMode mod" +
"e, Boolean trackChangesInSaver)\r\n at Septa.PayamGostar.BusinessFacadeLayer.CRM" +
".User.Process.Engine.ProcessEngine.Save(CrmObjectEntity crmObject, CrmObjectSave" +
"Mode mode, Boolean trackChangesInSaver)\r\n --- End of inner exception stack tra" +
"ce ---\r\n at Septa.PayamGostar.BusinessFacadeLayer.CRM.User.Process.Engine.Proc" +
"essEngine.Save(CrmObjectEntity crmObject, CrmObjectSaveMode mode, Boolean trackC" +
"hangesInSaver)\r\n at Septa.PayamGostar.ServiceLayer.ServiceType.PGServiceTypes." +
"Modules.CrmObjectService`3.Save(String userName, String password, TInfo crmObjec" +
"tInfo)"